Conversion of dihaloalkane into alkyne does not involve
Correct answer: A. Addition
- A. Addition
- B. Elimination
- C. Base
- D. Heat
Explanation
A vicinal dihalide is converted to an alkyne by removing two molecules of hydrogen halide with hot alcoholic potassium hydroxide, which is a double dehydrohalogenation and therefore an elimination. Addition is the opposite process and would move back towards the saturated compound. The base and the heat are both required conditions for the elimination.
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About Elimination Reactions
Elimination reactions remove a leaving group and a hydrogen atom from adjacent carbon atoms to form an alkene. The topic covers dehydrohalogenation of alkyl halides, E1 and E2 mechanisms, the role of base, solvent and substrate structure, and Zaitsev orientation, which is often contrasted with substitution.
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